患者男,78岁。因COPD并发肺型脑病入院,经过呼吸兴奋剂、利尿剂及激素等治疗5d后查动脉血气:pH7.40,HCO-340mmol/L,PaO260mmHg,PaCO267mmHg,BE+13mmol/L,K+3.4mmol/L,Na+140mmol/L,Cl-90mmol/L。目前仍存在的体液代谢紊乱为()
A. 呼吸性酸中毒
B. 代谢性碱中毒
C. 低钾血症
D. 低钠血症
E. 呼吸性酸中毒合并代谢性碱中毒
F. 代谢性酸中毒
G. 呼吸性酸中毒+代谢性碱中毒+代谢性酸中毒
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A VTP domain has six active VLANs. Without notice, all VLANs except VLAN1 fail. Just prior tothe failure, Switch2 was added to the network. Which three issues on Switch2 could be the cause?()
A. Switch2 is configured for only VLAN1
B. Switch2 is a VTP server in a different domain
C. Switch2 is a VTP server in the Company domain
D. Switch2 is not a VTP domain.
E. Switch2 has a lower VTP configuration revision number than the current VTP revision
F. Switch2 has a higher VTP configuration revision number than the current VTP revisio
网络病毒的感染一般起始于()
A. 转发器
B. 用户工作站
C. 通讯线路
D. 网络服务器